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Environmental Science

Environmental Science
The average temperature of the earth is about __________ degree F.

67
59
57
65

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Environmental Science
_________ ecosystems are maintained artificially by man.

Brackish
Man-made
Artificial
Marine

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Environmental Science
Which one of the following is the correct percentage of the two green house gases that contribute to the total global warming?

Methane-20%, N2O-18%
CO2-40%,CFCs-30%
CFCs -14%, Methane-20%
N2O-6%, CO2 -86%

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Environmental Science
Animal dung is __________ waste.

Toxic
Biodegradable
Non biodegradable
Hazardous

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Environmental Science
This is used as a guide to planting and for determining the approximate date for harvesting crops:

Heating degree-days
Growing degree-days
Mean annual temperature
Cooling degree-days

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Environmental Science
The concept that 'population tends to increase geometrically while food supply increases arithmetically' was put forward by

Stuart Mill
Thomas Malthus
Charles Darwin
Adam Smith

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